Cool Math
Coolmath: Coolmath4kids: Subtraction: Fact Families
Explains what fact families are for addition and subtraction and includes sample problems to try.
US Department of Education
Helping Your Child Learn Math: Math for the Fun of It
This compilation of math activities engages parents and children in the use of math whenever they are at home. Packed with concise, high interest activities, related illustrations, detailed "parent pointers," and easy to following...
US Department of Education
Helping Your Child Learn Math: Math in the Home
An excellent compilation of activities that engage parents and children in math explorations at home. Detailed lessons covering a wide range of math topics such as fractions, measurements, money, data collection, and math in newspapers....
Windstream
Ojk's Precalculus Study Page: Sum and Difference Formulas for Tangent
This tutorial introduces the sum and differnce formulas for tangent, and gives several examples of problems to be solved as well as proving other identities. Assumes knowledge of the sum and difference formulas for sine and cosine.
Other
Susan Kramer: Singing While Dancing to Learn Basic Math
Students will master basic rhythmic movements and incorporate songs and rhymes into math learning. Site provides sample music selections, songs, and accompanying movements for nine activities.
Khan Academy
Khan Academy: Addition Using Groups of 10 and 100
In this exercise, students practice addition using groups of 10 and 100. Students receive immediate feedback and have the opportunity to get hints, watch a video tutorial, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2...
Illustrative Mathematics
Illustrative Mathematics: Find the Missing Number
Students will solve addition and subtraction equations with different structures so that they are able to see the connections between addition and subtraction more easily.
Khan Academy
Khan Academy: Add and Subtract Within 100 Word Problems 3
Practice solving word problems with addition and subtraction. These questions are start unknown problems including add to and take from problems. Numbers used are 100 or less. Students receive immediate feedback and have the opportunity...
Khan Academy
Khan Academy: Estimate to Add and Subtract Multi Digit Whole Numbers
Use estimation to find a reasonable solution to multi-digit addition and subtraction problems. Numbers are less than or equal to 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Cool Math
Coolmath: Coolmath4kids: Lessons
A large collection of tutorials covering concepts in addition, subtraction, multiplication, division, and fractions.
Math Aids
Math Aids: Integers Worksheets
Great resource to practice and strengthen math skills pertaining to integers. Math worksheets are printable, may be customized, and include answer keys.
Math Aids
Math Aids: Decimals Worksheets
Great resource to practice and strengthen math skills pertaining to decimals. Math worksheets are printable, may be customized, and include answer keys.
Math Aids
Math Aids: Word Problems Worksheets
Great resource to practice and strengthen math skills pertaining to word problems. Math worksheets are printable, may be customized, and include answer keys.
Math Aids
Math Aids: Fact Family Worksheets
Great resource to practice and strengthen math skills pertaining to fact families. Math worksheets are printable, may be customized, and include answer keys.
Khan Academy
Khan Academy: Add and Subtract Complex Numbers
Practice addition and subtraction with complex numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Vector Sum and Difference
[Free Registration/Login may be required to access all resource tools.] Looks at finding the direction and magnitude of vectors and breaking vectors into component parts.
ABCya
Ab Cya: Turkey Touchdown
What's more Thanksgiving than turkey and football? What about turkeys playing football? Turkey Touchdown is a great way for kids to celebrate the holiday and practice their math facts. Kids will choose a level of difficulty, and then...
Math Slice
Math Slice: Guitar Hero
This resource contains practice problems in the form of a guitar hero game. Students are able to select if they want to practice addition, subtraction, multiplication, division, or exponents. Students are also able to select a range of...
abcteach
Abcteach: Teach: Decimals
[Free Registration/Login Required] Educators can generate worksheets for primary or elementary grades that focus on decimal addition, subtraction and fraction practice. Worksheets include graphics and answer key.
Other
Sierra College: Trigonometric Identities
Provides trigonometric identities, which include fundamental identities, even-odd identities, addition formulas, double-angle formulas, subtraction formulas, product-sum formulas, and identities for sin squared and cos squared.
Math Slice
Math Slice: Number Slice Special Test
A succinct test on number concepts including problem solving, basic operations, and computation. Assessment is scored online and student score is compared with other student test scores. Great for use as a quick assessment.
Math Slice
Math Slice: Heavy Slice Special Test
A concise test for assessing number sense using weights and scales. Assessment is scored online offering students immediate feedback. Can be used for a quick assessment.
Fun Brain
Fun Brain: Power Football
In this game you can play football while solving math problems. Students can choose from Addition, Subtraction, Multiplication, Division, or All; there are 4 levels of play to choose from and they can choose algebra style or regular math.
Khan Academy
Khan Academy: Graphically Add and Subtract Complex Numbers
Add or subtract complex numbers, and plot the result in the complex plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.